Cellular 4G/5G Firmware Verification Engineer

San Diego, California, United States


Role Number:200447481
Do you have a passion for invention and self-challenge? As part of a world class modem team, we'll craft sophisticated powerful embedded firmware that deliver more performance in our products than ever before! We'll work across fields to transform improved hardware elements into a single, coordinated design. Join us, and you’ll help us innovate new wireless systems technologies that continually outperform the previous iterations. By collaborating with other product development groups across Apple, you’ll push the industry boundaries of what wireless systems can do and improve the product experience for our customers across the world. As a Cellular 5G/4G Firmware Verification Engineer, you will be at the center of the embedded 5G/4G/multimode cellular firmware effort within a silicon design group responsible for crafting and productizing groundbreaking cellular SoCs. This position requires someone comfortable will all aspects of embedded firmware verification, that thrives in a multifaceted multi-functional organization, is not afraid to debate ideas openly, and is flexible enough to shift on constantly evolving requirements.

Key Qualifications

  • Minimum BS and 3 + years of relevant industry experience
  • In-depth understanding of 5G and 4G 3GPP physical layer and protocol stack procedures and configurations
  • Experience with firmware test case planning, design, and development for the 4G/5G functional or performance or RF scenarios
  • Strong understanding of automation tools and scripting languages such as Python, C/C++, Java (a plus)
  • Strong validated understanding of multiple 4G/5G signaling and physical layer test equipment along with their automation interfaces
  • Strong RF background and familiarity with RF systems fundamentals as well as hands-on experience with RF test equipment including network analyzer, spectrum analyzer, vector signal analyzer, vector signal generator, etc. (a plus)
  • Strong analysis and debugging capabilities to be able to define issues and work with firmware development and systems design teams to close these issues
  • Deep understanding of software engineering principles, and core computer science fundamentals
  • Fundamental facility with build and source code control tools
  • Versatile to learn new architecture and frameworks
  • Experience with network emulators, silicon prototyping, emulation systems, and virtual platforms a plus


Work with a team of component validation, integration, protocol test engineers, firmware developers and system engineers to build firmware verification test cases and end to end physical layer performance Design and develop validation frameworks for the 4G/5G firmware Design, develop, and complete test cases for the 4G/5G firmware and debug and analyze issues found during the testing Build test automation of 4G/5G UEs, test simulators and test gNodeBs Verify key protocol, signal processing and numerical algorithms with very tight time, latency and energy budgets Work with Systems/Firmware teams to perform validation of new and existing features Assist in the development of pre-silicon emulation systems/virtual platforms and use them for pre-silicon firmware design and HW verification Evaluate and implement powerful tools for build, formal verification and test

Education & Experience

Minimum BS and 3 + years of relevant industry experience

Additional Requirements

Pay & Benefits